diff --git a/stepmania/src/Bookkeeper.cpp b/stepmania/src/Bookkeeper.cpp
index 7fbadc747c..74376c43bf 100644
--- a/stepmania/src/Bookkeeper.cpp
+++ b/stepmania/src/Bookkeeper.cpp
@@ -100,10 +100,18 @@ void Bookkeeper::ReadFromDisk()
 		vector<CString> parts;
 		split( line, " ", parts, true );
 
-		int p = 0;
+		unsigned p = 0;
         for (int i=0; i<DAYS_PER_YEAR; ++i)
             for (int j=0; j<HOURS_PER_DAY; ++j)
+			{
+				if( p >= parts.size() )
+				{
+					LOG->Warn( "Parse error in %s", COINS_DAT.c_str() );
+					return;
+				}
+
                 m_iCoinsByHourForYear[i][j] = atoi( parts[p++] );
+			}
     }
 }